IQ scores have a mean of 100 and a standard deviation of 16. Albert Einstein reportedly had an IQ of 160

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost.swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

What is the value of x when x + 7 = 21?